Water-filter.



3 SHEETS-SHEET 1.

PATENTED PEB. 27, 1906.

D. M. rPAUTz. WATER FILTER. APPLICATION FILED MAY 12, 1905.

PATENTBD PEB. 27, 1906.

D. M. PFAUTZ. -WATER FILTER. APPLIUATION FILED MAY lz, 1905.

3 SHEETS-SHEET 2.

Hmm

PATENTED FEB. 27, 1906.

. was

OOO

D. M. PPAUTZ. WATER FILTER. APPLICATION FILED MAY 12, 1905.

DANIEL M. PFAUTZ, OF GERMANTOWN, PENNSYLVANIA.

WATER-FILTER.

Specification of Letters Patent.

Patented Feb. 27, 1906.

Application filed May 12, 1905- Serial No. 260,085.

To all whom it may concern:

Be it known that I, DANIEL M. PFAUTZ, a citizen of the United States, residing at yGrermantown, in the county of Philadelphia and State of Pennsylvania7 have invented certain new and useful Improvements in Water-Filters, of which the following is a specification.

My invention has relation to a portable apparatus for filtering water; and in such connection it relates to the construction and arrangement thereof.

The principal object of my present invention is to provide a comparatively simple and durable house or portable apparatus for filtering water effective in action for removing extraneous matter from the Water and adapted to be readily cleansed as to the respective chambers of the filter suitably partitioned or separated from each other, yet at the same time in communication with each other for the passage of contaminated water therethrough for removal of foreign matter therefrom and the withdrawal of the same purified or filtered through the discharge thereof. 4

My invention stated in general terms consists of a portable filtering apparatus constructed and arranged in substantially the manner hereinafter described and claimed.

The nature and scope of my present invention will be more fully understood from the following description, taken in connection with the accompanying drawings, forming part hereof, in which- Figure 1 is a vertical longitudinal central sectional view of a portable filtering apparatus embodying main features of my invention. Fig. 2 is a side. elevational view thereof, and Figs. 3 and 4 are respectively vertical sectional views on thelines 0cm and g/ y of Fig. 1.

Referring to the drawings, A represents a rectangular or other shape casting forming a housing, which by means of partition-walls a3 and a4 is divided into superposed horizontal compartments a, a, and a2, the compartments being closed at one end by removable plugs (L13, e, and al? As shown in Fig. 1, each of the compartments a, a', and a2 is divided into three communicating sections or chambers a6, a7, and a8 of gradually decreasing diameter and preferably circular in cross-section. The intermediate chambers a7 of the compartments serve for the reception of the filter-beds b, b', and b2, in the present instance consisting of tubes or cylinders b3, which in conjunction with perforated conjunction therewith a disks b4 and b5 at both ends of each of the tubes or cylinders form a receptacle for suitable filtering media c. The perforated disk b5 of the filter-beds Z), b', and b2 is removably secured thereto, so as to permit of the ready removal of the filtering media c for cleansing or for the replacing of the same by other filtering media. One mode of securing the perforated disk b5 to each of the tubes or cylinders b3 consists of a ring b, provided with two annular projections 67 and bs, threaded on their outer surface, which projections form an annular recess, into Iwhich the threaded end of the cylinder b3 is placed to form in fluid tight joint.

The threaded end of the cylinder b3 by engaging the thread of the projection t7 is securely and at the same time removably connected with the ring 5G. The disk b5 bears with its perimeter against the inner annular projection e7 and rests against a The threaded porfiange b9 of the ring 56.

tion of the outer annular projection bs of the ring b engages the threaded portion of a shoulder a9, formed between the chambers a and a7, and the flange b1 of the ring b by bearing against the face of the shoulder a forms a water-tight joint between the ring and shoulder. The above-described engagement of the ring b with the shoulder a5 and the threaded end of the cylinder b3 serves the purpose of removably connecting the perforated disk to its cylinder b3 and the cylininder to its chamber a? and also of forcing the free end of the cylinder b3 against a shoulder or offset portion am, arranged between the chambers a7 and as. In this manner a watertight oint is established between each of the cylinders and their respective chambers. Each of the rings be is provided with a bail- ,shaped handle t, which permits ol' the ready withdrawal of the ring b when the same is unscrewed from its cylinder and shoulder as, for which purpose the plug closing th." iront chamber a6 is first removed therefrom. The filter-bed disengaged from the shoulders a9 and am can now be removed from its chamber e7 for the cleansing of the filtering media c or for the replacing of the same by other lfiltering media.

The filtering media in the lowermost tube or cylinder may consist of porous fragmentary material, preferably Connellsville coke or carbon; in the next tube or cylinder of a mixture of coke, carbon, or the like and a porous material, such as pumice-stone, in

IOO

IIO

relatively large fragments, but both as a mass of different densities from the material of the first tube or cylinder, while in the upper tube or cylinder adjacent to the discharge of the filtered water the filtering media may be of relatively small fragments of porous material, such.as pumice-stone, and of a density differing from that of either of the other materials of the tubes or cylinders. The coke in large fragments not only permits the fluid to pass readily through the tube or cylinder, but by reason of the jagged irregular shape of the fragments stringy or slimy impurities and coloringmatter are caught and fastened in the materials of the tube or cylinder. The pumice-stone in the succeeding tube or cylinder possesses the peculiar pro erty of absorbing and holding smaller de ris and nitrogenous impurities, as well as coloring-matter, and the jagged edges of the fragments of pumice-stone also help to strain the fiuid of stringy or hair-like impurities. Moreover, the use of coke and pumice-stone for filtering gives a filtering media which in a high degree is pure for such purplose byreason of being produced under a high eat.

The chambers aG and a8, arranged in front and in the rear of each of the filter-beds, form superposed rows of chambers 5 in the present instance two of which on opposite ends of the filter-beds are alternately connected with each other by openings a and cl2, arranged in the partition-walls a3 and a4. These chambers a and as, in conjunction with the openings a and a, serve to conduct water in a circuitous path and in opposite directions through the casting A, and the chambers in addition thereto serve as receptacles in which impurities of the water may be precipitated without in the least interfering with the proper operation of the filter-beds. As shown in Fig. 2, the casting A, by means of a T connection d, is removably secured to a water-supply pipe B. The connection d is provided with two branch pipes d and d2, which conduct VWater from the supply-pipe B either into the chamber a of the upper compartment a or into the chamber a,8 of the lower compartment a2, for which purpose the branch pipe d is provided with valves d3 and d4, the valve d4 of which directly engages the housing A, as shown in Fig. 4. If the valve da is closed, the water from the supply-pipe B to be filtered is first conducted into the chamber @L8 of the lower compartment a2, from which the same is conducted through the filter-bed b2, containing the coarsest filtering media c. After the water has passed thisvfilter-bed the same reaches the chamber a6 of the compartmtnt a2 and rising therein flows into the chamber a of the second compartment c by passingI through the opening an. From this chamber the water passes through the filter-bed b of this compartment a', containing somewhat finer filtering media c, and by reaching the chamber 0,8 of the same rises in this chamber and by passing the opening a flows into the chamber as of the upper compartment containing the filter bed l), having the finest filtering media c. The water having finally reached the chamber a6 of the upper compartment a in a thoroughly purified condition is conducted from the same by means of a spigot c, preferably carried by the plug a, closing the upper compartment a. The chambers a and as of the lower compartment a2 will receive the greatest amount of impurities carried by the water, but not removed by the lower filter-bed b2. The lowermost chamber a6 will also receive the impurities precipitated in the chamber a of the intermediate compartment directly located above the same. If it is desired to remove the impurities of these chambers, as well as the superposed chambers c8 of the intermediate and upper compartments a and a, valvesf and f ofthe chambers as and a6 of the compartments a2 and a valve f 2 of the chamber as of the intermediate compartment a are opened, and at the same time the spigot e is closed. The water conducted directly into the chamber 0,8 of the lower compartment will fiush this chamber and will pass out of the same through the spigot f, while a portion of the water reaching the chambers a of the lower and intermediate compartments a2 and a] and the chambers es of the intermediate and upper compartments a and a, through their respective filter-beds, will flush these chambers and will pass out through the spigotsf and f 2 by flowing through ducts g, g', and g2, respectively. On the other hand, when it is desired to clean the filter-beds, the valve d4 is closed and the valve d3 is opened. The water from the supply-pipe B flows into the chamber a of the upper compartment c and from the same passesthrough the intermedin ate and lower compartments a and a2 and through their respective filter-beds in a re.

verse direction to that of the water to be filtered, and finally passes out of the casing A through the duct g and spigot f of the chamber a? of the lower compartment a2. However, by the opening of all the spigots ff, and f a portion of the water and the impurities removed from the upper and intermediate filter-beds may be removed before reaching the lowermost filter-bed in the compartment a2. At the same time when the spigot f2 is opened and the spigots f" and f are closed the uppermost filter is alone cleaned, since the water passes out of the chamber as of the compartment a. If the spigotsfz and f are closed and only the spigot f is opened, the water will pass through two filter-beds and leave the casting A through the chamber a of the lower compartment a2. When both the inlet-valves d3 and d4, as well as the spigotsf, f, and f 2 are opened, the flow of water IOS IlO

vwill be divided, a portion of which passes into the lowermost chamber a8 and will directly flush the same and the portion entering the uppermost chamber a6 will pass through the filter b and into both chambers as of the uppermost compartment a and intermediate compartment a. In the chamber a8 of this compartment, as well as in the chamber a8 of the lowermost compartment a2, the water will redivide, one portion flowing out of the spigotsf andfz, respectively, whereas the remaining portions will fiow toward each other and through the filter-beds b and b2, uniting in the chamber a6 of the lowermost compartment, and leaving the same through the spigot f. When the water to be filtered contains any great amount of impurities and quickly renders the filter-beds inoperative, it is advisable to first clean the uppermost filter-bed, then both the uppermost and intermediate filter-beds, and thereafter all three filter-beds. This successive cleaning of the filter-beds prevents the impurities which have been removed from the upper and intermediate filter-beds being conducted into the lower filter-bed, which by being the first of the beds placed in the path of the water to be filtered naturally contains the greater amount of impurities. If, however, the amount of impurities carried by the water is comparatively small, all three filter-beds may be cleaned simultaneously:

Having thus described the nature and object of my invention, what I claim as new, and desire to secure by Letters Patent, isn

1. In a filter, a housing divided by partition-walls into a series of superposed compartments, each divided into three chambers, a receptacle containing filtering media removably mounted in the intermediate chamber of said chambers to form a row of superposed free chambers at each end of said receptacles, an opening in each of the partition-Walls opposite to each other and adapted to connect two superposed or end chambers with each other and to form a passageway from one compartment to the other, an inlet and an outlet for water at each end of said housing and in the last chamber of the lowermost and in the first chamber ofthe uppermost compartment, said inlets and outlets adapted to reverse the flow of water through said filter-receptacles and the rows of superposed chambers, and said openings in said partition-walls, in conjunction with said chambers, adapted to permit of the alternate passing of water from opposite sides through said filter-receptacles within said housing.

2. In a filter, a housing divided by partition-walls into a series of superposed compartments, each divided into three chambers, receptacles containing filtering media removably mounted in the intermediate chamber of said chambers to form a row of' superposed free chambers at each end of said receptacles, an opening in each of the partition-walls opposite to each other and adapted to connect two superposed or end chambers with each other to permit sediment precipitated to accumulate in one of said directly-connected chambers and to form a passage-way from one compartment to the other, an inlet and an outlet for water at each end of said housing and in the last chamber of the lowermost and in the rst chamber of the uppermost compartment, the inlet of one chamber and the outlet ofthe other of said chambers adapted when alternately opened to reverse the fiow of water through said filter-receptacles and said chambers, and said openings in said partition-walls in conjunction with said chambers adapted to permit of the alternate passing of water from opposite sides through said filter-receptacles within said housing.

3. In a filter, a housing divided by partition-walls into a series of superposed compartments, each divided into three chambers, a receptacle containing filtering media removably mounted in the intermediate chamber of said chambers to form a row of superposed free chambers for the accumulation of sediment at each end of said receptacles, an opening in each of the partitionwalls opposite to each other therein and adapted to connect two superposed or end chambers with each other to permit the sediment preciptiated to accumulate in the lowermost one of said directly-connected chambers and to form a passage-way from one compartment to the other, an inlet and an outlet for water to be filtered at each end of said housing and in the last chamber of the lowermost chamber and in the first chamber of the uppermost compartment, the inlet of one chamber and outlet of the other of said chambers adapted when alternately opened to reverse the fiow of water through said chambers within said housing and said openings in said partition-walls adapted to permit ofthe alternate passing of water from opposite sides through said filter-receptacles, and outlets for water arranged in each of the lower chambers of the connected chambers adapted to permit of the removal of the sediment therefrom.

4. In a filter, a housing divided by partition-walls into a series of superposed compartments, each divided into three chambers, tubes or cylinders closed at each end by a perforated disk holding filtering media in position therein and removably mounted in the intermediate chamber of said chambers to form a row of superposed free chambers for the accumulation of sediment at each end of said cylinders, an opening arranged in each of the partition-walls opposite each other and adapted to connect two superposed or end chambers with each other to IOO IIO

permit the sediment precipitated therein to accumulate in the lower chamber of said directly-connected chambers and to form a passage-way from one compartment to the other, an inlet for water arranged in the last chamber of the lowermost and in the first chamber of the uppermost compartments respectively, and outlets for water arranged in each of thelower chambers of the connected chambers, said inlets and outlets for water adapted, when opened, to permit of the flow of water from opposite ends within said housing and lof the removal therefrom of sediment from the lower chamber of each of the connected chambers.

5. In a filter, a housing divided by partition-walls into a series of superposed compartments, each divided into three chambers, tubes or cylinders closed at each end by a perforated disk holding filtering media in position therein and removably mounted in the intermediate chamber of said chambers to form a row of superpose'd free chambers for the accumulation of sediment at each end of said cylinders, an opening in each of the partition-walls opposite each other and adapted to directly connect two end chambers with each other to permit sediment precipitated to accumulate in the lower chamber of said connected chambers and to form in conjunction with said chambers a passage-way from one compartment to the other, an inlet and an outlet for water at each end of said housing and in the last chamber of the lowermost and in the first chamber of the uppermost compartments respectively, and an outlet for water in each of the lower chambers of the directly-connected superposed chambers, said inlets and outlets with the exception of the outlet of the first uppermost chamber adapted, when opened, to permit of. the direct cleaning of the last of the lowermost chambers forming normally the entrancechamber for water to be filtered containing the greatest amount of impurities and of the cleaning ofthe filter-beds and removal of precipitated impurities from the lower chambers of the connected superposed chambers by dividing the water entering the casing from opposite ends and flowing in opposite directions toward each other and permitting of the redivision of both portions so as to permit one portion to pass through the outlets of these chambers without passing through the filter-beds and of the other portion passing therethrough to reach said outlets.

6. A filter, consisting of a casting divided by partition-walls into a series of superposed compartments, each divided into three chain'- bers, tubes or cylinders containing filtering media mounted in the intermediate chambers of said compartments, each of said intermediate chambers having a threaded portion at one end, a ring arranged at the threaded end of each of said cylinders having two threaded projections, the inner one adapted to receive the threaded end of a cylinder and the outer one ada ted to connect the same with said interme iate chamber by engaging the threaded portion thereof.

7. A filter, consisting of a casting divided bypartition-walls into a series of superposed compartments, each divided into three chambers, two of said chambers forming a shoulder between the same, tubes or cylinders containing ltering media mounted in the intermediate chambers of said compartments, each of said intermediate chambers having a threaded portion at one end, a ring arranged at the threaded end of each of said cylinders having two threaded projections forming an annular chamber and flanges projecting beyond said projections, a disk adapted to close the threaded end of a cylinder and to be held in position therein by the inner of said flanges, said inner threaded projection adapted to engage the threaded end of the cylinder and the outer threaded projection adapted to connect the cylinder with the intermediate chamber by engaging its threaded portion and the outer flange adapted to render the connection water-tight by engaging the shoulder formed between the first and intermediate chambers respectively of said compartments.

8. A filter, consisting of a casting divided by partition-walls into a series of superposed compartments,each divided into three chambers, two of said chambers forming a shoulder between the same, tubes or cylinders containing filtering media mounted in the intermediate chambers of said compartments, each of said intermediate chambers having a threaded portion at one end, a ring arranged at the threaded end of each of said cylinders having two threaded projections forming an annular chamber and flanges extending beyond said projections, a disk adapted to close the threaded end of the cylinder and to be held in position therein by the inner of said flanges, said inner threaded projection adapted to engage the threaded end of the cylinder and the outer threaded projection adapted to connect the cylinder with the intermediate chamber by engaging its threaded portion and the outer iiange adapted to render this connection water-tight by engaging the shoulder formed between the first and intermediate chambers of said compartments, and a handle connected with each of said rings and adapted to permit of the disconnection of the Jfilter-tube from its chamber to remove the same therefrom.

In testimony whereof I have hereunto set my signature in the presence of two subscribing witnesses.

' DANIEL M. PFAUTZ. Witnesses:

J. WALTER DoUeLAss, THOMAS M.' SMITH.

IOO 

